This is the calculation, and you can output all 92 solutions for the 8 queens problems like this:

queenst 8
0 4 7 5 2 6 1 3
0 5 7 2 6 3 1 4
0 6 3 5 7 1 4 2
....

each column is a row number, and the integer is which column the queen is in, or vice versa on rows and columns.
,or print how many solutions
$queens
92 8
$ gives the 'shape' of the array, that is 92 rows (solutions) x 8 columns (8-queens problem).